Improvement in feed-water regulators for steam-boilers



UNITED STATES PATENT OFFICE.

ROBERT BERRYMAN, OF. HARTFORD, CONNECTICUT, ASSIGNOR TO THE BERRY- MANREGULATOR AND ALARM COMPANY, OF SAME PLACE.

IMPROVEMENT IN FEED-WATER REGULATORS FOR STEAM-BOILERS.

Specification forming part of Letters Patent No. 118,679, datedSeptember 5, 1871.

To all whom it may concern:

Be it known that I, ROBERT BERRYMAN, of Hartford, county of Hartford,State of Connecti' out, have invented a Feedater Regulator forSteam-Boilers, of which the following is a specification':

My invention consists of a vessel situated outside of a steam-boiler,and controlled by the water and steam within the same, in combinationwith a valve or cook for regulating the admission of steam to thepumping-engine or injector which supplies the boiler, and with a valveor cook for regulating the supply of water to the boiler; and also incombination with intervening mechanism, whereby the movements of thesaid valves or cooks are dependent on those of the vessel, all of whichwill be fully explained hereafter.

Figure l-is a sectional view of a low-water indicating apparatusconnected with the steam and water-pipes of a pumping-engine inaccordance with my invention; Fig. 2, a perspective view of a portion ofthe same; and Fig. 3, a diagram illustrating the invention as applied totwo boilers.

On reference to Fig. 1, A represents a portion of a steam-boiler, and Ba low-water indicating apparatus attached to the top of the said boiler.This apparatus is similar to that for which Letters Patent were grantedto me on the 25th day of January, A. I). 1870; and consists of twoflexible pipes, a and a, communicating with the interior of the boilerat points below and at the extreme low-water level, and connected attheir outer ends to a vessel or receiver, 1), suspended from the shortarm of a weighted lever, j, which has its fulcrum at 00 on a suitableframe, g, attached to the top of the boiler.

The vessel 1) is controlled in its movements by the height of the waterin the boiler, the contents of the vessel being discharged into theboiler through the pipe at when the water is at its lowest level, thesaid vessel being then overbalanced and raised by the action of theweighted lever f, and being again filled with water and overbalancin gthe lever when the water-level in the boiler is raised. The vessel 1)and its weighted lever during their movements furnish sufficient powerto operate the valves or cocks in the steam and dischargepipes of apumping-engine for supplying the boiler with water, as I will nowproceed to describe. Two connectin g-rods, h and It, Figs. 1 and 2, areconnected to the long arm of the lever f and to the operating-arms 1)and iof two valves or cocks, k and k. The valve is is arranged upon thesteam-pipe C of the pimiping-engine, and the valve 70 upon thefeed-water pipe D, leading from the pump to the boiler. When theweighted end of the lever f descends in consequence of the low level ofthe water in the boiler, the valves 70 and k will both be opened, thefeed-pump started, and water forced into the boiler until it reaches thedesired height, and as soon as the end of the lever f is raised inconsequence of this increased height of the water in the boiler, thevalves 70 and 70 will be closed and the motion of the feed-pump stopped.

The diagram, Fig. 3, represents the application of my invention to twoadjacent boilers to be supplied with water by a single feed-pump. Eachof the boilers has an indicating apparatus, B, with vessel, weightedlever, 850., complete, and each weighted lever is connected by rods to avalve, 70, in a branch steam-pipe, 0, leading from its own boiler to themain steam-pipe C of the feed-pump, and to a valve, k, in a branchfeedwater pipe, d, leading from the main pipe D to its own boiler. Whenone of the boilers, the boiler A, for instance, needs replenishing withwater, its apparatus B will be operated as before described, and thevalves k and 7c in its branch pipes will be opened so as to supply steamto the feed-pump, and enable the latter to force water into the boiler,and these valves will be automatically closed, as before described, whenthe boiler is filled to the proper height. The boiler A may bereplenished in a similar manner independently of the boiler A, or bothboilers may, when necessary, be filled at the same time, both boilers inthis latter case furnishing steam for the supply of the pump, as all ofthe valves will be opened at once.

It will be evident that three, four, or a greater number of boilers canbe supplied as readily as two, with feed-water by a single-pump, allthat is necessary being that each boiler shall be furnished with anindicating apparatus, B, and with branch pipes communicating with themain pipes C and 1).

The connecting-rods h and h are each made in two sections, threaded atthe ends with right-andleft-handed screw-threads, and connected togetherby a similarly-threaded thumb-nut, y. This enables the rods to belengthened or shortened as desired, in order to regulate the extent ofthe opening and closing of the valves. It also enables the feed-pump tobe worked at a reduced.

rate of speed, even when none of the boilers require replenishing, bypermitting one or more of the valves k in the steampipe to remainslightly opened, as under some circumstances it would be objectionableto entirely stop the pump.

It will be evident that by a slight modification of the apparatus aninjector could be substituted for the feed-pump.

I claim The combination of a pump or inj ector-a series of boilers, eachprovided with a low-Water appatus, a series of steam-pipes, O, and aseries of feed-water pipes, D, each communicating with one of theboilers, and all communicating with the pump-and mechanism,substantially as described, whereby the movement of each low-waterapparatus will open or close simultaneously a valve in one of the pipesO and a valve In one of the pipes D, as set forth, so that the said pumpWitnesses:

Bonus N. PRATT, SHERMAN W. ADAMS.

